tiefel



No. 608,929. Paten'tedAug. 9, I898.

|.. c. TIEFEL.

COMBINED EXTENSION AND STEPLADDEB.

(Applicatidn filed Apr. 25, 1898.) V 7 (No Model.) 2 Sheets-Sheet I.

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No. 608,929. Patented Aug. 9, I898.

L c. TIEFEL. COMBINED EXTENSION AND STEP LADDER.

(Applicatibn filed Apr. 25, 1898.)

2 Sheets-$hwt 2.

(No Model.)

LEONARD C. TIEFEL, OF ROCHESTER, NEV YORK, ASSIGNOR OF ONE-HALF TOGERMAIN MATTISON, OF SAME PLACE.

COMBINED EXTENSIONVAND STEP LADDER.

, BPECIFICATION forming part of Letters Patent N0. 608,929, dated August9, 1898.

Application filed April 25, 189 8.

T0 rtZZ whmn it may concern:

Be it known that I, LEONARD O. TIEFEL, a citizen of the United States,residing at Rochester, in the county of Monroe and State of New York,have invented a new and useful Improvement in a Combined Extension andStep Ladder, which improvement is fully set forth in the followingspecification and shown in the accompanying drawings.

My invention is a combined step and exten sion ladder consisting of twoparts or sections joined or connected to act together. These sectionsare so formed and connected that in addition to serving jointly as astep-ladder or an extension-ladder they may be also so arranged ordisposed upon eachother that the device in the form of a step-ladder mayrest upon the steps of a flight of stairs, or one section may rest uponthe floor and the other section upon a table, counter, window, stool, orother elevated object, as convenience or need may require.

The invention is hereinafter fully described, and more particularlypointed out in the claims.

Referring to the drawings, Figure 1 is a front elevation of the deviceclosed. Fig. 2 is a side elevation seen as indicated by arrow 2 in Fig.1, the device being spread as a stepladder. Fig. 3 is a side elevationof the upper end of the device, better showing the relation of the partswhen closed. Fig. 4 is an elevation of the upper parts of the devicewhen spread, sectioned on the dotted line 4 4. in Fig. 1. Fig. 5 showsthe device formed as an extension-ladder. Figs. 6 and 7 show the deviceas a step-ladder adapted to rest on objects at different elevations.Fig. 8 is a top view indicated by arrow in Fig. 4, parts being brokenaway. Figs. 3, 4:, and S are drawn to a scale larger, and Figs. 6 and 7to a scale smaller, than that of Figs. 1, 2, and 5.

Referring to the drawings, A is the front section, and B the rearsection, of the ladder, joined or-connected at the top of the frontsection by a horizontal angular yoke or con-.

. fining-bar a, of iron. This yoke or bar crosses the front section atits rear side, having its ends turned orbent down against the outsidesurfaces;,-.:.-respectively, of the section and secured to the latter bypivot-bolts l b, so as to Serial No. 678,797. (No model.)

swing freely thereon. The section B is held by and confined within theyoke, being adapted, however, to slide longitudinally to any distanceupward through said yoke.

As constructed the side rails c c of the section A are spread or flaredat the bottom, the rails cl d of the rear section B being straight andparallel and fall just Within said rails 13 c at their upper ends, asshown in Fig. 1.

The rungs e of the section B are made to reach through the rails (Z dand project some distance at the sides thereof, as shown in Figs. 1, 3,and 8, these projecting ends 6 being cylindrical. The section A isprovided with two seats or rests f f on its rear side, adapted toreceive and hold the projecting ends 6' of either rung e, as shown inFigs. 1 and 3, when the sections are brought together side by side. Nowby sliding the section B endwise up through the yoke a any one of therungs c below the upper one may be caused to occupy said seats or rests,thus making an extensionladder of the device, as shown in Fig. 5., Ifthe ladder, as shown in said Fig. 5, be weighted, as by a personoccupying it, the tendency would be to bend or force the middle of theladder in the direction indicated by arrow g and swing the lower end ofthe section '13 away from the section A; but as the rests ff are formedto securely hold the projecting parts 6 when pressed therein by theweight of the section B, and thus prevent the separation of thesections, the ladder as a whole is firm when in its extended form, thefront side of the section B, it being understood, bearing against therear edge of the upper step h of the section A.

The section Bis provided on its front side,

at its upper end, with projecting stops '5 i,

Figs. 4. and 8, rigid with the section and adapted to cross and bearupon the upper step h of the section A when the device is put in theform of a step-ladder. These steps encountering said upper step andcoacting with the confining-bar or yoke a serve to limit the distance towhich the lower ends of the sections may be spread when opening them tothe form of a step-ladder. The yoke, while not directly secured tothe'rearsectio'n, turns with the latter when the sections are opened orclosed at the bottom, always main- 860111011 [65b upuu ztu Umvzuwu. uuUuu, an a muwy of a flight of stairs O or a counter D, Figs. 6 and 7,said rear section is both elevated and swung away from the frontsection. In this form and position of the ladder the projections 6 bearagainst the rails c c of the front section within the yoke, asindicated, the latter preventing said projections from passing by orescaping from the ends of said rails. The structure is thus made firm inits position, in which the sections are differently ele vated.

WVhat I claim as my invention is- LEONARD C. TIEFEL.

Vt itnesses:

ENOS B. WHITMoRE, M. L. WINs'roN.

